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Communication: FOURTH PERIOD

A randomized 25 question test from a pool of 761 questions, good luck!
Digital signals are, either specific or transitory, voltage levels represent states of logic. Which of the signal encoding methods below uses the conversion of dc voltage levels to ac to represent logic states?
There are many conventions to the creation of tags in a HMI. Which of those conventions would best describe the part of a tag that the arrows are pointing to in the picture below?
Which of the answers below is best described as an instrument database that can be modern control systems can access?
The (DA) server in a SCADA system administers remote site communications. Which of the environments below would the (DA) server reside?
Due to the uncomplicated nature of the Modbus frame structure, it requires a simple access method. Which of the access methods below is a method that this frame structure supports?
The industrial network topologies you are required to use is defined by the OSI network model. Which of the common topologies below is likely described as a network with a single central connection point?
Communication that is wireless in a SCADA system is common. Which of the communication methods below would be best defined as one that licensing would be required for most applications?
There are several layers in the DCS architecture. Which of the levels below would have direct control over the ESD system?
Which of the DeviceNet components below is best described as being used where ingress protection is needed?
Model based network devices are at the user level of Ethernet/IP. Information of a devices type and classification would be contained in which of the text files below?
The OSI model describes how a network should be arranged. Which of the layers below concern network topologies the most?
Modbus has standard command codes to allow the master to access information from it's slaves. Which of the commands below would be used to request the content of the slaves input register # 30009?
Which of the H1 transmission system function blocks below is best described as generally available default to field devices after it has been energized?
All the wired network components interact with ISO layers. Which of the answers below reflects the ISO layers that the gateway interacts with?
There are numerous I/O modules that a typical DCS has access to. Which of the modules below is described as one that accommodates the HART devices point-to-point connection?
IPv4 network classes can also be defined by the IP address they use. Which of the answers corresponds best to the address in row "H"?
There are several advanced alarm methods available that provide a greater level of functionality. Which of the methods below provide supplementary information about specific alarms to an operator?
Historical data can be logged through a HMI application. Which of the data storage methods below would best be described as one that looses resolution of the data, although reduces the volume of data?
Which of the network components below combines two or more smaller networks working within the ISO physical and data layers?
CSMA/CD is used as an access method that uses constructive interference detection for any data collisions. Which of the OSI layers does this detection occur on?
In a typical GUI, values take one of four generic indicators. Which of the indicators below would best represent the image below?
IPv4 network classes can also be defined by the default subnet masks that they use. If the subnet mask was 255.255.0.0, which of the classes below would be used?
Which of the wire types below is best suited for networks in office or business environments?
Parameter settings program the behavior of the function block. Which of the parameters below can be described as one that transmits data to another block?
Which of the wire types below is best suited for field device transmissions?